You might think pop stars singing openly about same-sex love is a relatively recent phenomenon. A new book explodes that myth.

David Bowie Made Me Gay: 100 years of LGBT Music, by Bristol-based British writer Darryl W Bullock, takes a comprehensive look back at a century’s worth of queer artists.

Most of us are familiar with the likes of Elton John, Scissor Sisters, Freddie Mercury, Boy George and Sam Smith. However, music fans are likely to treasure this exhaustive tome as it highlights the contribution from many artists now forgotten or, in some cases, unappreciated during their lifetimes.

It also demonstrates that not only have there been LGBT recording artists since the dawn of recorded music but many did little to hide their sexual orientation.

As part of recognizing and celebrating Gay Pride Month, Billboard has been enlisting various pop culture celebrities and luminaries to write love letters and experiences with the gay community. Following the likes of Barbra Streisand, Elton John, and Elizabeth Warren, Martin Garrix pens a letter of his own.

Read below:

I’ve been raised with the belief that everyone is equal no matter what gender, skin color, or sexual orientation. I’m from The Netherlands which is one of the most liberal and accepting countries when it comes to LGBT rights, but even here, not everyone is accepting.

June 1st kicks off Billboard’s month long 30 Days of Pride, an initiative to highlight LGBTQ Pride Month. To celebrate, some of the biggest names in music have penned heartfelt love letters to the LGBTQ community, thanking them for both their strength and support.

“Your stories are what inspire me, bring me joy and make me and my sons strive to be better people," shared Britney Spears in her specially handwritten letter.